Tandem attachment for motor cycles



A ril 16, 1929. A, PE O 1,709,538

TANDEM ATTACHMENT FOR MOTOR CYCLES I Filed Oct. l1, 1926 a J J v fl/za'r/ea [Bx-Jam QZEi-rzey Patented Apr. 16, 1929.

UNITED; STATES.

- 1,709,533 PATENT orrics.

CHARLES A. PERSONS, OF WORCESTER, MACSACHUSETTS, ASSIGNOR TQ PERSONS-MA" JESTIC MANUFACTURING' COMPANY, OF WORCESTER, MASSACHUSETTS, COR- PORATIO'N or MASSACHUSETTS.

I TANDEM ATTACHMENT FOR MOTCR CYCLES.

Application; filed October 11, 1926. Serial no. 140,919.

The present invention relates to a tandem attachment for motor cycles which adapted to provide a safe and easy riding seat for the passenger in the rear of the usual drivers seat. I

My improved tandem attachment is so constructed that it may be quickly applied to a motor cycle, the several parts of the attachment beingv so connected and braced that the tandem seat will be able to safely carry any load to which it issubjected. The improvesil attachment is adapted to afford ZLIHZLKlIIlUIIl degree of comfort for thetandem rider, by allowing aneasy position for the riders kneesv and by the provision of an improved hand grip for the tandem rider. The above and other advantageous features of my invention will hereinaftermore fully appear, refer ence being had to the accompanying draw ings, in WhlCh 4 Fig. 1 is a view in side'elevation lllustrating a portion of a motor eycleprovided with my improved tandem attachment. I

Fig. 2 is a perspective view of the attachment shown in Fig. 1, removed from the motor cycle.

Fig. 3 is a fragmentary perspective View showing the mounting of the foot pedals on an enlarged scale. c Fig. 4 is a fragmentary plan View showing the pivotal attachment of the saddle.

Fig. 5 is a detail view of the spring structure.

Like reference characters refer to like parts in the difl'erent figures.

Referring to the drawings, the attachment comprises a pair of side bars 1, 1, identical in form, one end of each side bar 1 being connected to an inclined frame member 2 of the motor cycle. As shown in Fig. 2, the attachment of a bar 1 to a frame member 2 of the motor cycle is by means of a clip 3 embracing the member 2 and coacting witlia clip portion 1 formed at the end of the bar 1. The clip portions 4 are slightly angled with respect to the remainder of the bars 1,. so as to enable the bars 1 to be readily fitted to the frame members 2 where the latter converge toward their lower ends.

The side bars 1, 1, extend rearwardly from the frame members 2, 2, in parallel relation and are secured ,at their other ends to the upper portion of a saddle yoke 55, by means of bolts 6. The yoke 5isadaptedto embrace the rear mudguard 7 of the motor cycle with its spaced arms 5 extending downwardly to a point where they are connected by bolts 8 to the rear fork of the motor cycle frame. The tandem attachment also comprises a pair of uprights=9,l9, which are connected intermediate their ends to the side bars 1, 1, by means of bolts 10.- The upper portions of the uprights 9 are bent toward each other near theirv upper ends by easy curves, at 9, and are secured together in spaced relation by means of a bushing 14 through which passes a bolt 15 See Fig; 4;. The upperends of thesnprights 9 above'thebushing 14 are connected by means of a through-bolt 16 which is surroundedby a'tubular handle or grip 17, preferably in the form of a. rubber tube covering awoodenybushing. The grip 17 is ofsuflic'ient Widthtoreceive both hands of the rear, rider when the latter. is seated in the saddle 18, the mounting of which will now be described;

The saddle 18 be of any desired type,-

and as shownis provided with an elongated pommel 19 which terminates in a J'fork portion 20, as shownin Fig. 4. The arms of the fork portion 20 are provided with alined openings for. receiving the spacing bushing 14 which separates the uprights 9 as previously described. The bushing 14 is slightly greater in length than the width of the pommel fork 20, so that the saddle 18 may pivot freely on the bushing 14- evcn when the cuprights 9 aredrawn tightly against the ends of the bushing l t by the nut 21 on the bolt 15. The rear of the seat'18 is supported by an arch 22, the sides of which extend downwardly within compound supporting springs23.

As best shown in Fig. 5, each spring 23 is of the compound type with the upper looped end of its'outer coil 23 secured to the yoke 5 by the same bolt 6 which secures the. side bar 1 thereto, while the inner spring 23 is adapted to receive the weight of the saddle 18 from a shoulder 24 provided on the arch 22. The lower end of each inner spring 23 rests on a bushing 25 whichis. held at the lower end ofthe arch arm by means of a nut26, with the lower end of spring 23 'attached thereto; thus, the weightof the rider passes through the inner compression springs 23 before being transmitted to the outer tension springs 23*, whereby vibration and rebound saddle 19 is. substantially eliminated.

of the g The pedal construction is shown in Fig. 3, each pedal 27 being pivotally connected to the lower end of an upright 9 by means of a bolt 28 passing through ears 27 provided the pedal 27. The bolt 28 passes through a bracket 29 secured to the upright 9 by means of a bolt 30, the bolt 30 also serving to hold the middle portion of a pedal spring 31. The ends of the pedal spring 31 press on the extended ears 27 of the pedal 27 so as to tend to hold the pedal 26 eitherentended, or in its upper position when the pedal has been turnedabout its pivot pin 28 to move it to the (lGSlTBClPOSliilOIl.

Forthe purpose of stiffening the Whole attachment, cross braces 32 are provided which extend below the sidebars 1.

The braces 32 are connected intermediate their ends to the u rights 9 by means of bolts 33, While the opposite ends of the braces 32am connected to the side bars 1 by means of the bolts 34; at one end, and by means of the yoke bolts I 6 at the other end. It is evident that the knees of the rider to set in snugly while the rubber grip 17 can be firmly graspedby the riders hands. Furthermore, the seat is supported so that it will safely carry any load to which it may be subjected, the compound springs which receive the weight of the sad- 1. A tandem attachment for motorcyclescomprising a frame made up of side bars pr0- vided at their front ends with clip portions angled to tit the upper convergent frame bars of a motor cycle, a yoke connected to the rear ends of said side bars and secured at its lower ends to the fork of the motor cycle, uprights secured to intermediate portions of said side bars carrying between them a sleeve for pit otally supporting the forward end of a saddle yieldingly supported by saidyoke and bracing members extending between said uprights and said yoke below said side bars.

2. 'A tandem attachment for motor cycles connirising a frame made up of side bars provided at their front ends with clip portions angled to lit the upper convergent frame bars of a motor cycle, a yoke connected to the rear ends ofsaid side bars and secured at its lower ends to the fork of the motor cycle, uprights secured to intermediate portionsof said side bars carrying between them a sleeve for pivotally supporting the forward end of a saddle yieldingly supported by said yoke and continuous bracing members extending between said yoke, said uprights and the forward ends of said side bars,; below said'side bar s.

Dated October 8,1926.

CHARLES A. reasons. 

